Clutch-pulley.



PATENTED APR. 9, 1907.

a. BEYBE. CLUTCH PULLEY. APPLIOAIION FILED 3117.19, 1907.

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GEORGE BEYER, OF NEW LONDON, WISCONSIN.

CLUTCH-PULLEY.

Specification of Letters Patent.

.n-atentec April 9, 1907.

Application filed January 19, 1907. Serial No. 353,068.

To all 1071/0111 it nun/ (so/1,0157%:

Be it known that I, GEORGE Bnrnn, a citizen of the United States,residing at New London, in the county of W'aupaoa and State ofVisconsin, have invented a new and useful Improvement in Clutch-Pulleys,of which the following is a specification.

My invention relates to a clutching device for pulleys, and moreparticularly those for driving-machines of various kinds which requireto be run at a particular and uniform speed without regard to variationsin the speed of the prime mover, such as creamseparators driven by agisolene-engine; and it comprises a hub and sleeve adapted to be securedupon the main shaft of an engine, it having near one end a circularflange provided at its circumference with a surface, preferably abeveled surface, adapted for frictionallyengaging a correspondingsurface upon a loose pulley, the aforesaid sleeve being provided withscrew-threads and a nut and washer at its free end, between which andthe aforesaid friction-surface the pulley is loosely mounted, the pulleyhaving a frictionsurface arranged for engaging the frictionsurface ofthe aforesaid flange and being also provided with springs, theresiliency of which can be increased or diminished by the turning of theaforesaid nut for pressing the frictionsurfaces of both the flange andpulley together, the pulley being further provided with a plurality oflevers which are hinged to it in such a manner as to receive thecentrifugal action of the revolutions of the pulley, while said actionof the levers forces the flange and pulley apart, the combined efl'ectof the action of the centrifugally-acted--ipon levers and of the springsgoverning the rate of speed at which the pulley will transmit its powerto 1 the machinery being driven by it.

The device is illustrated in the accompanying drawings, in which Figure1 is a side elevation of the complete device. Fig. 2 is a plan of thefixed sleeve and its flange. pulley part, inverted. f is a verticalsection of Fig. 3 on line a a, Fig. 3. Fig. 5 is a plan of the loosepulley end of the clutchpulley with the nut and washer upon the end ofthe sleeve omitted. Fig. 6 is a side elevation of the hub, its flange,and sleeve.

Similar numerals and letters indicate like parts in the several views.

1 indicates the hub of a flange 2, having an extension of a hub of lessdiameter or a sleeve Fig. 3 is a plan of the loose 1 3 and 3 upon eachside of the flange. The sleeve 3 is not a necessity, but is here shownas having a set-screw -'l for securing the hub to a shaft; but someother location for the securing means may be selected and said sleeveomitted. The sleeve 3 is extended to some length, turned off, andprovided with threads :t. t its outer end. The outer end of the hub l isturned off for a. purpose to be described lMTOiftli'. The outereircuinference of the flan e 2 is turned off for forming a friction-stlace c, prefeaxzbly to a beveled form, but not neces 'ilywithas greabevel as shown, as a flat taco may be used, but not with itislliclorvresu ts.

" pulley h ving 42 1 uulicx-les a bore 8 for fittmg the sleeve 2-; andat one end is provided with flaring friction-tinge l) 2 nd centrlly ofthe pulley with levers 10, the levers beinghinged lo the era's ll of the(hinge with pins 12, and being provided upon their shorter ends withelcvzlions 123, which when the pulley is plzced in position on thesleeve will be in position for eng xging with the end face of the hubwhenever the cenlxil'ug '.l 9 tion upon s :id levers throws their longends on.- ward, skid throwing outward of the levers toting by the cnggenient of their elevtions 13 with the end f .ce of the hub to sepnzztethe friction-surfaces of the ll nges 2 .nnd'tl.

Arrai ed ill the end ofthc pulley are spiral spring-pins l l, holes 15being drilled through the pulley and then ceuuterlmred to the poiiit 16for receiving sprizgs 17. A washer 18 is arranged on the sleep to engagell e ends of said springs, and when the round nut 19 is screwed upon thethreads a ainst the washer it will co rpress said sprl s and at the samelithe draw the friction-faces of the flanges 2 and 9 together. It willbe observed.

' that while the springs draw the friction-surfaces togethcr thecentrifugal action of the levers throws them apart, and as there willalways be a little slipping between said surfaces the rate of speed atwhich the pulley will run will depend both on the tension of the springsand the throwing outward of the longer and heavier ends of the lovers,which latter action is necessarily governed by the speed at which thepulley is revolved. By screwing the nut onto the sleeve the frictionsurfaces are brought more tightly together and the speed of thepulleytherebyincreased, and by screwing it ell it will be decreased. henthe nut has been adjusted to the speed desired, it can be secured inposition by means of the set-screw 20. Should it then be too fast or tooslow, the operator has but to loosen the set-screw and readjust the nut.hen once the desired speed is obtained, the pulley will continue to runat that speed re 'gardless of the speed (within reasonable liinits) ofthe prime mover and transmit the power to the desired mechanism.

21 indicates openings near the circumference of the pulley-flange forproviding access to the hinge-pins 12. In the drawings the pulley is ofless diameter than the flange; but this proportion between the diametersof pulley and friction-surface may be reversed on pulleys of largerdiameter as circumstances require.

Having described my invention, what I claim, and desire to secure byLetters Pat ent, is

1. A clutch-pulley, comprising a hub adapted to be secured upon a shaft,a flange extending outward around the hub having its outer circumferenceformed into a friction-surface, a second hub or sleeve of a lesserdiameter than that of the first-mentioned hub extending outwardtherefrom, a screw-thread formed upon the outer end of said smallersleeve, a nut adapted to be screwed upon said threads, awasher arrangedupon said smaller sleeve inside of said nut, a pulley loosely mountedupon said smaller sleeve between said washer and flange, a flar ingflange extending outward around said pulley from one end thereof, theouter portion of the circumference of said flaring flange being afriction-surface corresponding with the frictionsurface of thefirst-named flange, a plurality of levers hin ed to the in side of saidsecond-named flange so as to have a short and light inner end and alonger and heavier outer one, said inner ends being arranged forengaging the end face of the first-named hub by reason of thecentrifugal action of the pulley upon the outer end of said levers asthe pulley is revolved, and thereby separate the friction-faces of saidsecond and first named flanges, a plurality of springs arranged in theouter end of said pulley adapted to be compressed by the screw ing ofsaid nut upon the sleeve against said washer for increasing the frictionbetween the friction-faces of said second and first ientioned flanges,and a set-screw arranged in said nut for its retention in the desiredposition upon said sleeve.

2. A clutchpulley, comprising a hub adapted to be secured upon a shaft,a flange extendin outward around the hub having its outer circumferenceformed into a beveled friction-surface, a second hub or sleeve of alesser diameter than that of the firstmentioned hub extending outwardtherefrom, a screw-thread formed upon the outer end of said smallersleeve, a nut adapted to be screwed upon said threads, a washer arrangedupon said smaller sleeve inside of said nut, a pulley loosely mountedupon said smaller sleeve between said washer and flange, a flaringflange extending outward around said pulley from one end thereof, theouter portion of the circumference of said flaring flange being abeveled friction-surface corresponding with the friction-surface of thefirst -nan1ed flange, a plurality of levers hinged to the inside of saidsecond-named flange so as to have a short and light inner end, and alonger and heavier outer one, said inner ends bein arranged for engagingthe end face of the first-named hub by reason of the centrifugal actionof the pulley upon the outer ends of said levers as the pulley isrevolved, and thereby separate the frictionfaces of said second andfirst named flanges, a plurality of springs arranged in the outer end ofsaid pulley adapted to be compressed by the screwing of said nut uponthe sleeve against said washer for increasing the friction between thefriction-faces of said second and first mentioned flanges, and aset-screw arranged in said nut for its retention in the desired positionupon said sleeve.

GEO. BEYER.

l Vitnesses GILEs H. PUTNAM, MABEL N IoHoLsoN, J OI-IN MARX, JOHNREMMEL.

